Add health to Distributed Systems section (#6172)

Author: schigh

README.md

@@ -1020,6 +1020,7 @@ _Packages that help with building Distributed Systems._
 - [go-zero](https://github.com/tal-tech/go-zero) - A web and rpc framework. It's born to ensure the stability of the busy sites with resilient design. Builtin goctl greatly improves the development productivity.
 - [gorpc](https://github.com/valyala/gorpc) - Simple, fast and scalable RPC library for high load.
 - [grpc-go](https://github.com/grpc/grpc-go) - The Go language implementation of gRPC. HTTP/2 based RPC.
+- [health](https://github.com/schigh/health) - Health checker for Go services with Kubernetes probe support.
 - [hprose](https://github.com/hprose/hprose-golang) - Very newbility RPC Library, support 25+ languages now.
 - [jsonrpc](https://github.com/osamingo/jsonrpc) - The jsonrpc package helps implement of JSON-RPC 2.0.
 - [jsonrpc](https://github.com/ybbus/jsonrpc) - JSON-RPC 2.0 HTTP client implementation.